Cooling fan



FIG. 1 is a perspective view of a cooling fan showing our new design.

FIG. 2 is a front elevational view of the cooling fan.

FIG. 3 is a rear elevational view of the cooling fan.

FIG. 4 is a left-side, elevational view of the cooling fan.

FIG. 5 is a right-side, elevational view of the cooling fan.

FIG. 6 is a top plan view of the cooling fan.

FIG. 7 is a bottom plan view of the cooling fan; and,

FIG. 8 is a view similar to FIG. 1, but in a different assembly of a hub and a impeller of the cooling fan. 

CLAIM The ornamental design for a cooling fan, as shown and described. 